Washington, D.C. – Leaders with the U-S Bureau of Land Management and Forest Service say they won't place lives at risk by using aging air tankers to fight wildfires this year. Kathleen Clark with the B-L-M and Forest Service Chief Dale Bosworth issued a joint statement Tuesday defending their decision. They say they understand public concern, but for now wildfires will be fought on the ground. And they say a fleet of 33 air tankers won't take flight again until officials can find some way to assure their safety. Some lawmakers have criticized the decision to ground the planes.